Systems, devices and methods for communicating data over circularly pulse-shaped waveforms

Abstract

Circularly pulse-shaped waveforms for communication systems are disclosed herein including a single carrier modulation in which pulse-shaping is performed using a circular convolution by the transmitter for various modulation schemes. A transmitter, related method, and corresponding receiver are also disclosed for demodulation of the single carrier circularly pulse-shaped signal and data extraction.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of the filing date of U.S. Provisional Patent Application Ser. No. 62 / 335,976, filed May 13, 2016, the disclosure of which is hereby incorporated herein in its entirety by this reference.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]This invention was made with government support under Contract No. DE-AC07-05-ID14517 awarded by the United States Department of Energy. The government has certain rights in the invention.FIELD[0003]Embodiments of the present disclosure relate generally to systems, devices, and methods for generating circularly pulse-shaped waveforms by a transmitter, and processing the circularly pulse-shaped waveforms by a receiver, of a communication system.BACKGROUND[0004]As of today, orthogonal frequency division multiplexing (OFDM) has enjoyed its dominance as the most popular signaling method in broadband wired and wireless channels. Signal modulation using OFDM ...

AI Technical Summary

Benefits of technology

The patent describes a technology for transmitting signals using a circularly pulse-shaped waveform. The technology reduces peak-to-average-power-ratio (PAPR) of the output signal to improve the quality of the signal transmission. This allows for better transmission of data using single carrier modulation techniques. The technology also includes a method for reducing the peak-to-average-power-ratio (PAPR) of the input data signal using a pulse shaping filter in the frequency domain. The technology can be implemented in a communication system including a transmitter and a receiver, where the transmitter generates an output signal with the circularly pulse-shaped waveform and reduces the peak-to-average-power-ratio (PAPR) of the signal, and the receiver performs reverse signal synthesis to estimate the data symbols.

Problems solved by technology

It has been noted that OFDM faces many challenges when adopted for use in more complex networks.

Such synchronization has been found to be difficult to establish, particularly in mobile environments where Doppler shifts of different users are hard to predict and / or track.

Although FBMC may overcome some of the problems of OFDM when multiple users in a network are asynchronous, application of FBMC to multiple-input and multiple-output (MIMO) channels may not be as straightforward as when OFDM is used.

GFDM waveforms may be non-orthogonal and, thus, may result in a more complex receiver than C-FBMC.

Images